BMW M3 goes into the LIMP Mode

[cagi89]

Hi Guys iam new here and I think I have a big Problem.

first of all I have an BMW M3 E93 Convertible.
few weeks ago the Problem starts with my M3...

The Car starts after 30 Seconds the car stops running. I start it again after while and the car stops after 10 Seconds.

I got this Codes here

2B21 (Drosselklappenversteller Pre Drive Check Bank1) lt Carly ist das die Klemme 87 (Spannung = 0)
2B20 (Drosselklappensensor Bank 2)

of course I search the failure by google

i find a lot of same issues in the internet. But my Problem is which one resolves my ?

I already change this items
+ Battery
+ Idle Control Modul

After I change the Idle Control Modul ( I mean this part here on the Top the "little" Item)
https://www.m3post.com/forums/attach...1&d=1532100661

The car runs longer than 2 Min without stoping but the both failures comes immediately.

also I have in my CCC this failures

• DBC failure! Drive moderately
• Flat Tyre Monitor failure!
• Start assistance inactive
• Dynamic Damping control failure
• DSC failure! Drive moderately
• Fuel reserve!

My Diagnostic Tools is
Carly
Inpa
ISTA

[spammysammich]

Looks like you changed the fuel breather valve. Not the idle control module.

[GORDON.M3]

2B21 (Drosselklappenversteller Pre Drive Check Bank1) lt Carly ist das die Klemme 87 (Spannung = 0)
2B20 (Drosselklappensensor Bank 2)

Throttle Actuators.

[cagi89]

Yes it's truth I change the breather valve. What do you think? I should change the idle control Modul?

[Helmsman]

Originally Posted by GORDON.M3

2B21 (Drosselklappenversteller Pre Drive Check Bank1) lt Carly ist das die Klemme 87 (Spannung = 0)
2B20 (Drosselklappensensor Bank 2)

Throttle Actuators.

Good tip OP, "Drosselklappensensor" apparently translates to TAs.

Heres more info on codes and funktion: https://www.rebuild.org.uk/articles/fault-codes/

[cagi89]

@gordon you think both actuators are damaged?

[Helmsman]

Originally Posted by cagi89

@gordon you think both actuators are damaged?

No offence OP but if you google the codes it says issues on both banks, gave it a try? Regardless I'd personally just swap both TA's while in there, As hinted in the thread Rebuilt UK will ship them cheap over couple of days. ¨

Just my 2 cents.